IR South Eastern University of Sri Lankahttp://http://ir.lib.seu.ac.lk:80
The SEUIR digital repository system captures, stores, indexes, preserves, and distributes digital research material.Wed, 21 Feb 2018 12:01:56 GMT2018-02-21T12:01:56ZConceptual design of wireless feederhttp://ir.lib.seu.ac.lk/handle/123456789/3048
Conceptual design of wireless feeder
Murshid, M.B.
Fresh curiosity to trim en route the normal ways and means of yield
production in order to avoid the adverse effects of deepened Feed Management has generated the
requirement for precision Feed Management. Feed Management is an emerging technique in
which the efficient management of resources is being used to yield a better production. Precision
Feed Management necessitates tight nursing and control, which is usually taken care by electronic
systems. Same idea in Feed Management fields can be extended to farming to enhance the
production while using the eco- friendly outdated methods. A remotely manageable, novel,
electronic controlled feeder is projected in this Management Brain per in which a cellular mobile
network is used to regulator the feeder remotely. This system is a Management Brain to be of
administration the remotely ordered amount of feed and also the farmer can remotely query the
available lingering amount of feed in the feed tray. The proposed system allows the farmer to
remotely manage the feeders in a very efficient manner by which it is expected to harvest a higher
yield. The testing on an original of the projected feeder system verifies the contextualization of the
remote delivery of feed.
Thu, 07 Dec 2017 00:00:00 GMThttp://ir.lib.seu.ac.lk/handle/123456789/30482017-12-07T00:00:00ZElectromagnetic engineering for human healthhttp://ir.lib.seu.ac.lk/handle/123456789/3047
Electromagnetic engineering for human health
Murshid, M.B.
During fresh years there has been growing public concern on probable health risks from powerfrequency fields (extremely low frequency electromagnetic fields; Intensified Fields) and from
radiofrequency/microwave radiation emissions (Radio Frequency) from wireless communications. Nonthermal (low- intensity) biological effects have not been measured for regulation of microwave exposure,
although numerous scientific texts signpost such effects. The bio initiative text is based on an
international research and public strategy initiative to give an overview of what is known of bi- logical
effects that occur at low-intensity electromagnetic fields (Electromagnetic Fields) exposure. Health
endpoints texted to be connected with Intensified Fields and/or Radio Frequency include childhood
leukemia, brain tumors, Geno toxic properties, neurological effects and neurodegenerative diseases,
immune system deregulation, allergic and inflammatory responses, breast cancer, failure and some
cardiovascular effects. The bio inventiveness text decided that a reasonable misgiving of risk exists based
on clear evidence of bio effects at environmentally relevant levels, which, with prolonged exposures may
reasonably be presumed to result in health impacts. Regarding Intensified Fields a new lower public
safety limit for comfortable space adjacent to all new or promoted power lines and for all other new
structures should be applied. A new lower limit should also be used for present habitable space for
children and/or women who are pregnant. A protective limit should be approved for outdoor, cumulative
Radio Frequency exposure and for cumulative indoor fields with significantly lower limits than existing
guidelines. The current guidelines for us and European microwave experience from mobile phones, for
the brain are 1.6 w/kg and 2 w/kg, respectively. Since use of mobile phones is associated with an
amplified risk for brain tumour after 10 years, a new biologically based standard is warranted.
Thu, 07 Dec 2017 00:00:00 GMThttp://ir.lib.seu.ac.lk/handle/123456789/30472017-12-07T00:00:00ZEffect of Mycoherbicides on Waterhyacinth [Eichhornia Crassipes Mart. Solms]http://ir.lib.seu.ac.lk/handle/123456789/3046
Effect of Mycoherbicides on Waterhyacinth [Eichhornia Crassipes Mart. Solms]
One of the major problem accompanying water resource development in
Sri Lanka is the explosive proliferation of water hyacinths (Eichhornia crassipes). A
survey of plant pathogenic fungi associated with naturally infected water hyacinth was
conducted in different waterways in the Eastern part of Sri Lanka and potential
isolates including Alternaria alternata, Cercospora rodmanii, Aspergillus sp.and
Trichoderma sp. were identified. The four identified fungi were evaluated for their
pathogenicity on water hyacinth at laboratory conditions. The first pathogenicity trial
indicates, the leaf area affected by the fungal pathogen changes with the intensity
(days). The changes in leaf area affected by the pathogen across intensity levels
depend upon inoculation method (p=0.003). But there was no statistically significant
effect in the inoculation methods on the leaf area affected by the fungal type (p=0.06).
All fungal types had different levels of dead lesions formed in water hyacinth. After
seven days of inoculation, Alternaria sp. revealed to have the highest affected area,
followed by Aspergillus sp. and Cercospora sp. but, all four fungal species had similar
level of effects in term of dead lesion formed in leaves after 22 days of inoculation.
During the confirmation test, observed diseased symptoms also similar to first
laboratory trial which confirmed that the disease syndromes of first lab trial were
caused by the inoculated pathogenic fungi, not from the other factors and also indicate
that, after one week of inoculation A.alternata revealed to have the higher affected
area followed by C rodmanii and Aspergillus sp. and the Trichoderma sp. did not give
a significant effect on confirmation test. The selected three pathogenic fungi including
Alternaria sp., Aspergillus sp., and Cercospora sp. can easily culture and disease can
cause by conidia, mycelial fragment or mycoherbicidal preparation. Different carriers
produced different levels of affected leaf area upon infection by the fungal type
(p<0.0001). However, fungal types alone did not show differences in the formation of
dead lesions in the leaf surfaces of water hyacinth (p=0.31). Moreover, the carrier type
and fungi do not combine to influence the overall area affected by the fungus (p=0.49).
A better and quick infection caused by the mycoherbicidal preparation with oven ash.
The extent of infection depends on the concentration of mycoherbicide and the 60% of
oven ash concentration showed better result on water hyacinth control. We concluded
that, A. alternata and Cercospora rodmanii could be used as effective biocontrol
agents against water hyacinth following performance evaluation under natural
environmental conditions and their host specificity test.
Thu, 07 Dec 2017 00:00:00 GMThttp://ir.lib.seu.ac.lk/handle/123456789/30462017-12-07T00:00:00ZAssessment of rice (Oryza Sativa) diseases in selected G.N. divisions in Batticalo districthttp://ir.lib.seu.ac.lk/handle/123456789/3045
Assessment of rice (Oryza Sativa) diseases in selected G.N. divisions in Batticalo district
Begum, S.L. Rasmiya; Mubarak, A.N.M.
Rice diseases are considered to be the major limiting factor in rice production and improper
control measures without definite knowledge on rice diseases result in higher cost of
production. The main aim of the study was to evaluate rice diseases in selected
G.N.divisions of Sithandi, Karadiyanaaru and Eravur. 75 random paddy farmers were
interviewed with structured questionnaire. Followed by a quadrate (1’×1’) was used to
assess the type of diseases prevailed in the field. Disease prevalence was calculated as the
proportion of fields showing the disease, out of the total number of fields assessed. Disease
incidences were determined as the proportion of plants showing symptoms, expressed as a
percentage of the total number of plants assessed. From the survey findings it was noted
that 10 rice varieties such as BW 361, BG 360, BG 356, BG 300, AT 308, AT 362, LD 365,
BG 357, BG 358 and BG 352 were cultivated all over the study area. Further, results of the
field assessment revealed that blast and sheath blight were found to be more prevailed
diseases with 88% and 86.7% respectively. Further blast and sheath blight showed highest
incidence with respective percentages of 35.3% and 41.7%. Out of 10 varieties cultivated
across the selected paddy fields, variety AT308 and BG360 were found to be more
susceptible for blast and sheath blight respectively while the variety BG 358 was resistant for
blast and blight. Therefore, farmers in these regions were suggested to cultivate the varieties
which are more resistant for blast and sheath blight compare to others and to adopt field
management practices at optimum levels.
Thu, 07 Dec 2017 00:00:00 GMThttp://ir.lib.seu.ac.lk/handle/123456789/30452017-12-07T00:00:00Z